FORMAT is the DOS command for blanking a disk and initializing the file allocation table for a DOS file system (such as FAT or FAT32), or NTFS. Under FreeBSD, the equivalent command is newfs (similar to
mkfs in Linux). You may also wish to consider using sysinstall (FreeBSD only) to serve as a text-mode-GUI front end for formatting and partitioning/slicing hard drives. See also fdisk.